/*
 * Copyright (c) 2007, Yu Cheung Ho
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
 *
 *    * Redistributions of source code must retain the above copyright notice, this list of
 *        conditions and the following disclaimer.
 *    * Redistributions in binary form must reproduce the above copyright notice, this list
 *        of conditions and the following disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package hrds.commons.utils.yaml.wrapper;

import hrds.commons.utils.yaml.ReflectionUtil;
import hrds.commons.utils.yaml.exception.YamlException;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.Iterator;

public class ArrayWrapper extends AbstractWrapper implements CollectionWrapper {

  ArrayList list = new ArrayList();

  public ArrayWrapper(Class type) {
    super(type);
    assert type.isArray();
  }

  @Override
  public Object createPrototype() {
    throw new UnsupportedOperationException("createPrototype not supported.");
  }

  public void add(Object object) {
    list.add(object);
  }

  public void add(int index, Object object) {
    list.add(index, object);
  }

  public boolean isTyped() {
    return true;
  }

  public Class componentType() {
    return type.getComponentType();
  }

  @Override
  protected Object createObject() {
    String componentTypeName =
        ReflectionUtil.arrayComponentName(ReflectionUtil.className(getType()));
    Class componentType = ReflectionUtil.classForName(componentTypeName);
    if (componentType == null)
      throw new YamlException("class " + componentTypeName + " cannot be resolved.");
    Object array = Array.newInstance(componentType, list.size());
    for (int i = 0; i < Array.getLength(array); i++)
      try {
        Array.set(array, i, list.get(i));
      } catch (IllegalArgumentException e) {
        throw new YamlException(
            "Fail to set " + list.get(i) + " into array of type " + componentTypeName);
      }
    return array;
  }

  @Override
  protected void fireCreated() {
    list = toList(object);
    super.fireCreated();
  }

  ArrayList toList(Object array) {
    ArrayList ret = new ArrayList(Array.getLength(array));
    for (int i = 0; i < Array.getLength(array); i++) ret.add(Array.get(array, i));
    return ret;
  }

  public int size() {
    return list.size();
  }

  public boolean isOrdered() {
    return true;
  }

  public Iterator iterator() {
    return list.iterator();
  }
}
